Many of us are deliberately trying to keep our Tetherberry megabyte usage low (international, capped limits, etc). Nothing blows these plans worse than Microsoft pushing a 100 meg update patch while we are tethered. I would love the ability to block access to certain cites while tethered such as Microsoft's update cite, etc.
A list of common urls we might want to block (radio boxed) and the ability to add others would be great.



Turn off automatic updates. This should solve your problem.